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7686

Gas-discharge thermal-noise generator for 5.4–5.9 GHz microwave systems, providing nominal 13 dB noise output with pulsed ionization for measurement and calibration service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B9A
Base pins: -
Nominal heater: 6.3 V / 1.25 A

Description

Gas-tube thermal noise generator for 5400-5900 MHz microwave systems, specified for nominal 13 dB noise output and pulsed ionization operation.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 1.25 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Other

X-ray radiationInterelectrode capacitances

Max plate voltage: 700 V
Max cathode current: 150 mA

Thermal noise generator for 5400-5900 MHz with gas-tube noise source.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1945 Litton Industries

Published operating points and test conditions from this source.

SECTION 1

Other

Characteristic

Frequency Range
5400 to 5900 MHz
Noise Output
13 dB
Nominal

Other

Maximum VSWR
- to 1.15
Unfired
Maximum Insertion Loss
- to 0.2 dB
Unfired
RF Power Average Maximum
- to 50 mW
Continuous operation
RF Power Peak Maximum
- to 33 W
Continuous operation
Starting Voltage Maximum
- to 700 V
DC
Operating Voltage Maximum
- to 60 V
DC
Operating Current Maximum
- to 150 mA
DC
Life
5000 to - h
50 us energized every 3000 us
Ionization Time Maximum
- to 1 us
Deionization Time Maximum
- to 20 us
Operating Ambient Temperature
-54 to 60 C